Add Static Credentials for Rust SDK to the docs (#2824)

Co-authored-by: uslon <[email protected]>

Author: uslon

ydb/docs/en/core/reference/ydb-sdk/_includes/auth.md

@@ -66,6 +66,7 @@ You can click any of the methods below to go to the source code of an example in
    | Anonymous | ydb::StaticToken("") |
    | Access Token | ydb::StaticToken(token) |
    | Metadata | ydb::GCEMetadata, ydb::YandexMetadata |
+   | Static Credentials | [ydb::StaticCredentialsAuth](https://github.com/ydb-platform/ydb-rs-sdk/blob/master/ydb/examples/auth-static-credentials.rs) |
    | Service Account Key | not supported |
    | Determined by environment variables | not supported |
    | Execution of an external command | ydb.CommandLineYcToken (for example, for authentication using a {{ yandex-cloud }} [IAM token]{% if lang == "ru"%}(https://cloud.yandex.ru/docs/iam/concepts/authorization/iam-token){% endif %}{% if lang == "en" %}(https://cloud.yandex.com/en/docs/iam/concepts/authorization/iam-token){% endif %} from the developer's computer ```ydb::CommandLineYcToken.from_cmd("yc iam create-token")```) |

ydb/docs/en/core/reference/ydb-sdk/feature-parity.md

@@ -22,7 +22,7 @@
 | Load balancing across all nodes of all local DCs | \+ | \+ | \+ | ? | \- | \- | \- |
 | **Credentials providers** |
 | Anonymous (default) | \+ | \+ | \+ | \+ | \+ | \+ | \+ | \+ |
-| Static (user - password) | \+ | \+ | \+ | \+ | \- | \- | \- | \- |
+| Static (user - password) | \+ | \+ | \+ | \+ | \- | \- | \+ | \- |
 | Token: IAM, OAuth | \+ | \+ | \+ | \+ | \+ | \+ | \+ | \+ |
 | Service account (Yandex.Cloud specific) | \+ | \+ | \+ | \+ | \+ | \+ | \- | \+ |
 | Metadata (Yandex.Cloud specific) | \+ | \+ | \+ | \+ | \+ | \+ | \+ | \+ |
@@ -124,12 +124,12 @@
 | in OpenTracing | \- | ? | \+ | \- | \- | \- | \- | \- |
 | **Examples** |
 | Auth |
-| \* token | ? | ? | \+ | \+ | \+ | \+ |  | \+ |
+| \* token | ? | ? | \+ | \+ | \+ | \+ | \+ | \+ |
 | \* anonymous | ? | ? | \+ | \+ | \+ | \+ |  | \+ |
 | \* environ | ? | ? | \+ | \+ | \+ | \- |  | \+ |
 | \* metadata | ? | ? | \+ | \+ | \+ | \+ |  | \+ |
 | \* service_account | ? | ? | \+ | \+ | \+ | \- |  | \+ |
-| \* static (username \+ password) | ? | ? | \+ | \+ | \+ | \+ |  | \- |
+| \* static (username \+ password) | ? | ? | \+ | \+ | \+ | \+ | \+ | \- |
 | Basic (series) | \+ | ? | \+ | \+ | \+ | \+ | \+ | \+ |
 | Bulk Upsert | \+/- | ? | \+ | \+ | \+ | \- |  | \- |
 | Containers (Struct,Variant,List,Tuple) | \- | ? | \+ | \- | \- | \- |  | \- |

ydb/docs/ru/core/reference/ydb-sdk/_includes/auth.md

@@ -67,6 +67,7 @@
   Access Token | ydb::StaticToken(token)
   Metadata | ydb::GCEMetadata, ydb::YandexMetadata
   Service Account Key | не поддерживается
+  Static Credentials | [ydb::StaticCredentialsAuth](https://github.com/ydb-platform/ydb-rs-sdk/blob/master/ydb/examples/auth-static-credentials.rs)
   Определяется по переменным окружения | не поддерживается
   Выполнение внешней команды | ydb.CommandLineYcToken (например, для авторизации с помощью [IAM-токена]{% if lang == "ru"%}(https://cloud.yandex.ru/docs/iam/concepts/authorization/iam-token){% endif %}{% if lang == "en" %}(https://cloud.yandex.com/en/docs/iam/concepts/authorization/iam-token){% endif %} {{ yandex-cloud }} с компьютера разработчика ```ydb::CommandLineYcToken.from_cmd("yc iam create-token")```)
 

ydb/docs/ru/core/reference/ydb-sdk/feature-parity.md

@@ -23,7 +23,7 @@
 |Балансировка среди всех нод всех локального ДЦ|\+|\+|\+|?|\-|\-|\-||
 |**Credentials providers**|||||||||
 |Anonymous (по умолчанию)|\+|\+|\+|\+|\+|\+|\+|\+|
-|Static (user - password)|\+|\+|\+|\+|\-|\-|\-|\+|
+|Static (user - password)|\+|\+|\+|\+|\-|\-|\+|\+|
 |Token: IAM, OAuth|\+|\+|\+|\+|\+|\+|\+|\+|
 |Service account (Yandex.Cloud specific)|\+|\+|\+|\+|\+|\+|\-|\+|
 |Metadata (Yandex.Cloud specific)|\+|\+|\+|\+|\+|\+|\+|\+|
@@ -130,7 +130,7 @@
 |\* environ|?|?|\+|\+|\+|\-|\-|\+|
 |\* metadata|?|?|\+|\+|\+|\+|\+|\+|
 |\* service_account|?|?|\+|\+|\+|\-|\-|\+|
-|\* static (username \+ password)|?|?|\+|\+|\+|\+|\-|\+|
+|\* static (username \+ password)|?|?|\+|\+|\+|\+|\+|\+|
 |Basic (series)|\+|?|\+|\+|\+|\+|\+|\+|
 |Bulk Upsert|\+/-|?|\+|\+|\+|\-|\-|\+|
 |Containers (Struct,Variant,List,Tuple)|\-|?|\+|\-|\-|\-|\+|\-|